US3937518AExpiredUtility

Recliner lounger T-cushion chair with projectible headrest and legrest, and hardware therefor

72
Assignee: MOHASCO CORPPriority: Jan 9, 1975Filed: Jan 9, 1975Granted: Feb 10, 1976
Est. expiryJan 9, 1995(expired)· nominal 20-yr term from priority
A47C 1/037
72
PatentIndex Score
33
Cited by
8
References
16
Claims

Abstract

In this chair, the hardware has means to hold the seat against backward movement, while allowing movement of the seat up and down and forwardly. The headrest and legrest are projected when going from upright to T.V. position and the headrest and legrest remain in projected position when going from T.V. position to fully reclined position and from fully reclined position back to T.V. position; and they are retracted when going from T.V. position back to upright position.

Claims

exact text as granted — not AI-modified
I claim: 
     
       1. Hardware for a T-cushion chair comprising a seat link, an arm mounting link, a back mounting link pivoted to the arm mounting link and movable from upright position to T.V. and fully reclined positions, a toggle bar, a toggle bar connector link pivotally connected to said back mounting link and also pivoted to said toggle bar near the rear end of said toggle bar, a rear pivot link pivotally connected to said toggle bar, and to said seat link adjacent the rear end of said seat link, a front pivot link pivoted adjacent the front end of the toggle bar, a link pivoted to said front pivot link above the pivotal connection of said front pivot link to said toggle bar, to said seat link closer to the front end of the seat link than to the rear end of said seat link, said back mounting link having an arm projecting downwardly from its pivotal connection to said arm mounting link to its pivotal connection to said toggle bar connector link, said arm of said back mounting link swinging forwardly upon swinging the upper end of said back mounting link forward from upright to T.V. position, to move the toggle bar forwardly. 
     
     
       2. The combination of claim 1, said link which is pivoted to said front pivot link and to said seat link, comprising a legrest actuator link, a legrest bracket, and legrest linkage connecting said legrest bracket with said legrest actuator link and seat link to project said legrest bracket upon swinging the upper end of said back mounting link from upright position to T.V. position. 
     
     
       3. The combination of claim 1, said front pivot link having an arm extending downwardly below its pivotal connection to said toggle bar, a carrier link pivoted at one end to the lower end of said arm of said front pivot link, a seat control link pivotally connected to said carrier link and to said seat link, and a main link pivotally connected to said arm mounting link and to said carrier link. 
     
     
       4. The combination of claim 3, a sequence link pivoted to said arm mounting link, said sequence link being formed with a slot radial relative to the pivotal connection of said sequence link to said arm mounting link, a sequence throwout lever pivoted to said toggle bar, and to said carrier link and carrying a pin slidable in the slot of said sequence link. 
     
     
       5. The combination of claim 4, the pivotal connection of said rear pivot link to said toggle bar, and of said sequence throwout link to said toggle bar, being a common pivotal connection. 
     
     
       6. The combination of claim 5, the pivotal connection of said sequence link to said arm mounting link, and the pivotal connection of said sequence throwout link to said carrier link being coaxial in the upright position of said back mounting link. 
     
     
       7. The combination of claim 6, said sequence link projecting downwardly and rearwardly in the upright position of said back mounting link, and said pin on said sequence throwout lever being disposed at the end of the slot of said sequence link closest to the pivotal connection of said sequence link to said arm mounting link, in the upright position of the back mounting link. 
     
     
       8. The combination of claim 7, and a stop pin on said toggle bar adapted to contact an edge of said sequence throwout lever, in the upright position of said back mounting link. 
     
     
       9. The combination of claim 1, said front pivot link having an arm extending downwardly below its pivotal connection to said toggle bar, a carrier link pivoted at one end to the lower end of said arm of said front pivot link, a seat control link pivotally connected to said carrier link and to said seat link, and a main link pivotally connected to said arm mounting link and to said carrier link, a bellcrank pivoted mediately the ends thereof, to said arm mounting link, said bellcrank having a pair of arms, the rear end of said carrier link being pivoted to one arm of said bellcrank, a headrest actuator link pivoted to another arm of said bellcrank, a headrest control link pivoted, at one end, to said back mounting link and pivoted to the other end of said headrest actuator link, a headrest bracket forming part of a four bar linkage with a portion of said back mounting link, and means controlled by said headrest control link, to project and retract said headrest bracket four bar linkage. 
     
     
       10. The combination of claim 9, said four bar linkage comprising said headrest bracket, an idler link connecting the upper end of said headrest bracket to said back mounting link, a headrest driver link connecting the lower end of said headrest bracket to said back mounting link, said means to project and retract said headrest bracket, comprising a lower headrest connector link pivoted to an intermediate portion of said headrest control link, a headrest crank pivoted at one end to said back mounting link, said lower headrest connector link being pivoted to said headrest crank, and an upper headrest connector link pivoted at one end to said headrest crank and at its other end to said headrest driver link. 
     
     
       11. The combination of claim 10, the pivotal connection of said lower headrest connector link to said headrest crank being closer to the pivotal connection of said headrest crank to said back mounting link than to the pivotal connection of said headrest crank to said upper headrest connector link. 
     
     
       12. The combination of claim 11, and the pivotal connection of said upper headrest connector link to said headrest driver link, being closer to the pivotal connection of said headrest driver link to said back mounting link than the pivotal connection of said headrest driver link to said headrest bracket. 
     
     
       13. The combination of claim 12, the pivotal connections of said upper headrest connector link to said headrest driver link and to said headrest crank, and the pivotal connection of said headrest crank to said back mounting link, being substantially in a straight line, in the T.V. position of said back mounting link. 
     
     
       14. The combination of claim 1, said front pivot link having an arm extending downwardly below its pivotal connection to said toggle bar, a carrier link pivoted at one end to the lower end of said arm of said front pivot link, a seat control link pivotally connected to said carrier link and to said seat link, and a main link pivotally connected to said arm mounting link and to said carrier link, a bellcrank pivoted mediately the ends thereof, to said arm mounting link, said bellcrank having a pair of arms, the rear end of said carrier link being pivoted to one arm of said bellcrank, a headrest actuator link pivoted to another arm of said bellcrank, a headrest control link pivoted, at one end, to said back mounting link and pivoted to the other end of said headrest actuator link, a headrest bracket forming part of a four bar linkage with a portion of said back mounting link, and means controlled by said headrest control link, to project and retract said headrest bracket four bar linkage, said link which is pivoted to said front pivot link and to said seat link, comprising a legrest actuator link, a legrest bracket, and legrest linkage connecting said legrest bracket with said legrest actuator link and seat link to project said legrest bracket upon swinging the upper end of said back mounting link from upright position to T.V. position. 
     
     
       15. The combination of claim 1, a legrest bracket, and legrest linkage connecting the legrest bracket with said seat link and with said means, to project said legrest bracket upon moving said back mounting link from upright position to reclined position, a headrest bracket, and headrest linkage connecting said headrest bracket with said back mounting link and with said means, to project said headrest bracket as said back mounting link swings back from upright position to reclined position, and to retract said headrest bracket as said back mounting link swings back from reclined position to upright position, and to retract said headrest bracket as said back mounting link swings back from reclined position to upright position, said toggle bar and said arm of said back mounting link having means adapted to contact one another in the fully reclined position of said back mounting link to prevent retraction of the legrest linkage when the back mounting link is in fully reclined position. 
     
     
       16. The combination of claim 1, said front pivot link having an arm extending downwardly below its pivotal connection to said toggle bar, a carrier link pivoted at one end to the lower end of said arm of said front pivot link, a seat control link pivotally connected to said carrier link and to said seat link, and a main link pivotally connected to said arm mounting link and to said carrier link, a bellcrank pivoted mediately the ends thereof, to said arm mounting link, said bellcrank having a pair of arms, the rear end of said carrier link being pivoted to one arm of said bellcrank, a headrest actuator link pivoted to another arm of said bellcrank, a headrest control link pivoted, at one end, to said back mounting link and pivoted to the other end of said headrest actuator link, a headrest bracket forming part of a four bar linkage with a portion of said back mounting link, and means controlled by said headrest control link, to project and retract said headrest bracket four bar linkage, the pivotal point of said headrest actuator link to said bellcrank being moved forwardly and downwardly upon going from T.V. position to fully reclined position, and the pivotal connection of said headrest actuator link to said headrest control link, downwardly, as the backmounting link is rotated rearwardly and downwardly, to maintain the elevated position of the headrest bracket with respect to the back mounting link and so that the back mounting link and headrest bracket move together substantially as a unit during the movement of the hardware from T.V. position to fully reclined position.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.